add dependence map test

tests/laser/smt/independece_solver_test.py

@@ -5,19 +5,19 @@ import z3
 def test_get_expr_variables():
     # Arrange
     x = z3.Bool('x')
-    y = z3.Int('y')
-    z = z3.Int('z')
-    b = z3.Int('b')
+    y = z3.BitVec('y', 256)
+    z = z3.BitVec('z', 256)
+    b = z3.BitVec('b', 256)
     expression = z3.If(x, y, z + b)
 
     # Act
-    variables = _get_expr_variables(expression)
+    variables = list(map(str, _get_expr_variables(expression)))
 
     # Assert
-    assert x in variables
-    assert y in variables
-    assert z in variables
-    assert b in variables
+    assert str(x) in variables
+    assert str(y) in variables
+    assert str(z) in variables
+    assert str(b) in variables
 
 
 def test_get_expr_variables_num():
@@ -41,5 +41,40 @@ def test_create_bucket():
 
     # Assert
     assert [x] == bucket.variables
-    assert [x] == bucket.expressions
+    assert [x] == bucket.conditions
+
+
+def test_dependence_map():
+    # Arrange
+    x = z3.BitVec('x', 256)
+    y = z3.BitVec('y', 256)
+    z = z3.BitVec('z', 256)
+    a = z3.BitVec('a', 256)
+    b = z3.BitVec('b', 256)
+
+    conditions = [
+        x > y,
+        y == z,
+        a == b
+    ]
+
+    dependence_map = DependenceMap()
+
+    # Act
+    for condition in conditions:
+        dependence_map.add_condition(condition)
+
+    # Assert
+    assert 2 == len(dependence_map.buckets)
+
+    assert x in dependence_map.buckets[0].variables
+    assert y in dependence_map.buckets[0].variables
+    assert z in dependence_map.buckets[0].variables
+
+    assert conditions[0] in dependence_map.buckets[0].conditions
+    assert conditions[1] in dependence_map.buckets[0].conditions
+
+    assert a in dependence_map.buckets[1].variables
+    assert b in dependence_map.buckets[1].variables
 
+    assert conditions[2] in dependence_map.buckets[1].conditions